Introduction To Amateur Satellites

Transcription

1

2 Introduction To Amateur Satellites Peter Portanova, W2JV AMSAT Area Coordinator Patrick Stoddard, WD9EWK/VA7EWK AMSAT Area Coordinator and Director of Field Operations

3 CAPTAIN VIDEO- I AM READY TO BLAST OFF

4

5

6 Lance Ginner- K6GSJ

7

8 OSCAR 1 o

9

10

11

12 What is an Amateur Satellite?

13

14 Satellite Myths Busted at ARRL Centennial

15

16

17

18

19 Typical Equipment Used in FM/TX Satellite Ops 2-FT-50R s Dual-band, 2 VFOs Split-frequencies ADVANTAGES OF USING 2 HT S DIGITAL RECORDER, COMPASS,

20 Radios etc. Transmit: Dual-Band Radio- Program Split Freq. Including- Yaesu-Kenwood- Baofeng- Wouxun Receive: Scanners- Capable of RX- VHF-UHF Dongles- FUNcube, RTL-SDR

21 ANTENNAS ½ to ¼ Wave ground-plane ¼ - 5/8 WAVE VERTICALS EGGBEATER OMNIDIRECTIONAL Discone Hand Held Yagi (or other directional antenna)

22 PLAN FOR SUCCESS PREPARING FOR A SATELLITE PASS

23

24 SO-50

25 Satellite Orbits Geostationary HEO (High Earth Orbit) LEO (Low Earth Orbit) S0-50, APOGEE 713KM, PERIGEE, 603KM

26 When are the satellites available?

27

28 PROGRAMMING RADIOS RX TX

29 ADJUSTING FOR DOPPLER CH # NAME TX FREQ CTCSS (TX) RX FREQ 101 SO50 ON SO SO SO SO dlink 106 SO SO

30 ARROW OR ELK ANTENNAS

31 DOPPLER EFFECT ON SATELLITES

32 FARADAY EFFECT ON SATELLITES

33 Prepare for A Successful SO-50 Pass Go to Passes top menu- 30 degrees minimum when starting out Show predictions for SO-50 Add Grid Square- FN31 for the ARRL Centennial Convention RADIO- SPLIT FREQUENCIES Squelch Open WATCH- UTC COMPASS DIGITAL RECORDER Grid Square Predict Set your watch Compass to trace path Check watch Set radio for downlink- Uplink Listen for quieting Squelch open Doppler shifts fast

34 Making Contacts Listen to the satellite, pick out some callsigns Give your call-/ handheld Call a specific station, or just transmit your callsign - DO NOT CALL CQ! Contacts are usually quick - callsign, location, maybe your name (similar to HF contests or DXpeditions) Regular operators can recognize new operators, and are happy to make contacts and help with operating advice Satellite operators like to exchange grids for awards

35 ao flv Satellite Contact 5:56

36 WHAT WENT WRONG? FORGOT OUR GLASSES WATCH NOT SYNCHRONIZED INCORRECT LATITUDE, LONGITUDE NOT ON THE CORRECT PATH OF SATELLITE ANTENNA UPLINK, DOWNLINK FREQUENCIES OFF NOT TUNING FAST ENOUGH SATELLITE PASS TOO LOW SQUELCH IS MUTED XYL IS YELLING- THE NEIGHBORS ARE LOOKING MEET LAW ENFORCEMENT, UP CLOSE & PERSONAL

37 Expand your Horizons Linear Satellites- SSB/CW

38 SSB/CW via satellite Some differences Instead of one channel, transponders with 20 to 100 khz like a small HF band! Transponders support multiple QSOs Must deal with Doppler on both uplink and downlink Computer control of radio(s) preferred by many, but manual control is possible using One True Rule Manually adjust higher of the two frequencies, to deal with Doppler

39 SSB/CW via satellite Two satellite-ready transceivers in production: Icom IC-9100 Kenwood TS-2000 Many older satellite-ready transceivers on resale market still used by satellite operators. Icom IC-910, IC-821, IC-820 Kenwood TS-790 Yaesu FT-847, FT-736, FT-726 FlexRadio FLEX-5000 with VHF/UHF module

40 SSB/CW via satellite Some use separate radios for transmit and receive HF/VHF/UHF transceiver for transmit: Icom IC-706Mk2/Mk2G, IC-7000, IC-7100 Yaesu FT-817, FT-857, FT-897, FT-100 or monoband all-mode transceiver Many options for receive: Another HF/VHF/UHF transceiver for receive Wide-band, all-mode receiver Kenwood TH-F6A HT (all-mode RX up to 470 MHz) SDR receiver/dongle

41 SSB/CW via satellite With our current satellites in lower orbits, even 5W from FT-817s can be adequate for working these satellites. Lower power levels are recommended, as not to overpower these transponders. Two FT-817s, or an FT-817 with a portable allmode receiver (or TH-F6A), and an antenna like a dual-band Yagi or log periodic, can make a small and very portable all-mode satellite station.

42 SSB/CW via satellite FT-817ND/TH-F6A combo on rental car (with Elk log periodic, not in view). Where is this??

43 SSB/CW via satellite VK/WD9EWK, parked next to Olympic stadium in Sydney (Australia) Olympic Park - 28 May 2011

44

45 Telemetry Available in many formats CW RTTY AX.25 packet FSK, BPSK, and other digital protocols Even OSCAR I sent telemetry CW speed keyed to satellite temperature Some satellites send telemetry in multiple formats

46 Telemetry Provides information on health of satellite s systems Examples of telemetry from different satellites AO-27 used 1200bps AX.25 packet HO-68 uses CW $50Sat uses CW and RTTY ARISSat-1 used, and FUNcube satellites use, BPSK Fox-1 will use FSK simultaneously w/fm downlink Copying telemetry another great way to evaluate performance of stations used for satellite operating

47 Telemetry ARISSat-1 software

48 Telemetry FUNcube-1 Dashboard

49 Telemetry Some software only needs audio from a receiver to decode telemetry, where other software can even control the receiver to decode the telemetry. Once decoded, telemetry can be sent to satellite maintainers, or the software can upload it in real time to a central server.

50 Telemetry Telemetry from ARISSat-1 web site

51 Telemetry Telemetry from FUNcube-1 data warehouse web site

52 Telemetry Stations capable of working satellites can be used to copy satellite telemetry. Some will set up separate stations for receiving telemetry with a simpler combination of radio and antenna. For example, antennas.

53 Telemetry W2BFJ s antennas: 70cm AA2TX Lindenblad on left, 2m Eggbeater on right, both omnidirectional

54 Telemetry WD9EWK s 2m turnstile on mast/tripod, laptop with FUNcube Dongle & Dashboard software in yard

55 Telemetry SDR dongles are very popular for copying telemetry, thanks in large part to FUNcube Dongles and availability of inexpensive DVB TV dongles that can act as wide-band receiver for other signals. Depending on the type of telemetry downlink, other receivers and scanners are useful for copying telemetry.

56

57 ISS Contact- Col. Doug Wheelock

58 Amateur Satellite Resources ARRL

59 Satellite Tracking Software iphone- Satellite Tracker Android- FREE AMSAT Droid Web- Orbitron.com Heavens-Above.com N2YO.com SatPC32

60 SATSCAPE

61 SatPC32 software Will also do antenna and radio control

62 Nova

63 Periodicals

64 How do we keep Amateur Radio in Space?

65 Background AO-51 was the most popular ham satellite Could be worked with simple equipment - HT and a hand held antenna Widely used in recruiting, scouting, educational and demonstration events Failed in November

66 A New Reality P3E to GTO - $10M Small Sat to LEO - $3M ARISSat to ISS - $1M MicroSat to LEO - $500K 1U CubeSat to LEO - $100K 66

67

68 More Satellites on the way FUNcube-1 Delfi-n3Xt Ukube-1 Triton-1 Triton-2 Fox-1 RadFXSat

69 Get started right now! AMSAT-BB The new AMSAT Web Site has it all! Join AMSAT Buy Getting Started books Use Satellite positioning tools online Easy Satellite status & Frequency charts

70 Books for Specific Satellite Types Getting started Satellite frequency guide SatPC32

71

72 Questions?

73

74